When the handset starts to power on, press power key and volume up key at same time until get into recovery model.

Press volume key to select the “Wipe data/factory reset”, and then press power key you will see option “Yes” and “No”, press volume key to select “Yes”, and then press power key to confirm wipe data/factory reset.

About 5 second later it will go back to the recovery mode, and please press volume key to select the “reboot system now “, and then press power key to start system reboot

After system reboot, please set it up as a new handset or restore from the backup

What should I do if my handset is overheating?

Avoid using the handset while charging

Handset will heat up while extensively using big apps or heavy games – this is normal

Metallic body handsets will heat up more than a plastic body handset

Turn off services like GPS, WIFI, blue tooth, mobile data etc when not in use

What does the file format the Bluetooth support?

Pictures, audio, video, web, address book and other commonly used data can be transmitted via Bluetooth

The charging time of a new battery

Please read the instruction book carefully. if it is not mentioned, we suggest that charging for 6H or 8H after the battery use out.

What’s the temperature range Duubee handset can work normally

0℃~40℃

Does Duubee handset support the snapshot two-dimensional code?

Yes, but you need to download the application of the two-dimensional code

Will my handset still be covered by warranty after I root it?

We will consider the warranty void if our technical team found out that the handset had been rooted, and any replacement or repairing of parts will be billed.

All the operations of our handset that only able by Duubeetechnician or who are authorized by Duubee

How to do when Handset lost? Can dead lock the handset by IMEI (SN) number?

Call up police immediately, apply business downtime to network providers.

Currently cannot lock a lost handset and other related operations

How to find the IMEI number on my handset?

You can find the IMEI number on the handset IMEI label which stick on back of the handset

You can find the IMEI number on the giftbox IMEI label which stick on the one side of giftbox

You can check your IMEI number by input the code “*#06# on dialer

How to query the versions of Android or DuubeeOS is running on my handset?

Go to Settings > System>About handset

Check Duubee OS version

Check Android version

How to update the software on my handset.

Go to Settings > System> System updates to check for new software, if a new software is found, touch to download it, and then follow the onscreen instructions to update the software on you handset (battery needs to be above 30%)

How to create new folder? Re-name a folder? delete a folder?

Create new folder: Long press any icon file, drag it to another icon file.

Re-name a folder: click the folder, then click the original name “Folder”, and then naming it

Delete a folder:.drag the icon file out one by one, then the folder gone.

How to delete Google browser history record?

Open the Google browser

Click the “option button” on the top right corner, then select and click the” history”, and then click “CLEAR BROWSING DATA” to clear all history record.

My phone is lagging, doesn’t run smoothly or has a delayed reaction

Remove and reinstall applications

Close unused background applications

Clear caches and do security scanning

Download and use official applications

Reduce the use of widgets

Make factory reset

Restart your phone periodically

Detect and update software version by Fota

If the issue is still not resolved, visit the nearest service center

How to do when the handset freezes.

Long press power key allows the handset to restart, if often happen, please to do factory reset for your handset and keep your software is latest by FOTA, if the problem still occur visit the nearest service center.

What should I do if my handset is stuck on Duubee logo during handset power on .

You can do a force restart by holding down the Power key for around 10 seconds

Make sure your handset is running the latest software, please update it by FOTA, if not.

The handset has issues like some time cannot make a call; The handset freezes and sometimes cannot go back to the Main Menu when using some Apps or the functions

Enter safe mode that will deactivate all applications on the handset without having to uninstall it. In the shutdown state, press the power key about 3 seconds or long press the power key allows the handset to restart, when the Duubee

Logo appears hold on the volume down key until the safe mode is activated as you will see it on the bottom left of the screen.

When in safe mode try using the functions and application that you were experiencing issues to see if the issue is there. to deactivate the safe mode just reboot the handset. If having tried using the handset in safe mode and still experience issues, and then trying to uninstalling the related application

Or you can do a factory reset by the path Settings > System > Reset options > Erase all data (factory reset) or go to recovery mode to make factory reset for your handset but before you do so please do not forget to back up your handset to avoid losing any important data or files,

Keep your handset with latest software by FOTA, if problem still occur, visit the nearest service center.

This may be due to the brightness of your Phone being too low or the photo brightness being too high or too low. If the brightness of your Phone is too low, it is recommended that you adjust the brightness of your Phone and try again; If the screen brightness is too low, it may affect your preview of photos.

If the surrounding is too dark, adjusting the exposure time and ISO before taking a photo is recommended. Adjusting the exposure time first is recommended, and try to keep the ISO setting no higher than 200.

If the problem still occur visit the nearest service center.

Why does it take a long time to focus when taking macro photos?

Under most scenarios, your subject is more than 1 m away from your camera. As such, your Phone starts scanning from there by default when finding the focus. If the subject is close to the camera, it takes longer for your camera to focus.

In order to take clear photos, it is recommended to wait for your Phone to finish focusing before taking macro photos. This does not indicate any issues with your device.

Would an incorrect shooting method cause my device to not take panoramic shots?

When taking photos under Panorama mode, moving the camera too quickly or in the wrong direction may result in errors in the panoramic photo.

First set screen lock and then set the fingerprint
Setting—security & location—-screen lock—-choose the lock format you want
Setting—Fingerprint—Fingerprint Management—Next—input screen lock method—input your fingerprint

Under normal network connection, touch the Weather widget on the home screen and open the Weather widget settings. Click the “Current location”. Wait a few seconds and the current address weather will be displayed.

Why won’t the weather be updated in real time?

Real-time weather updates cause background data to be constantly accessed, which reduces standby time. So we set up a timer to update the current address information. You can set the update time: Touch the Weather widget on the home screen and open the Weather widget settings, Click setting Icon—Auto Update—Select time.

You may have set your handset to use only 3G connection, try changing it to 4G at; Settings>Network & internet> Mobile Networks>Select what SIM Slot you used >Advanced>Preferred Network Type>Select 4G.

Take out the SIM card, check if it is damaged, clean the chip and put the card back in, or try another SIM card on your phone to see if you fixed the issue.

Check with your operator if there are network failures and limits in your area.

Check with your operator if there is Mobile data speed limits or other SIM card functions that cause slow network speeds.

Multiple Apps running in the background will consume network speed and phone memory, so close the APPs when not in use timely.

Virus or malicious plug-ins in your phone will also result in slow network speeds. Regularly do security scanning is recommended.

If you are using a Wi-Fi network connection

Check the Wi-Fi signal on the status bar. Make sure that you’re within router’s range and can receive the signal of sufficient strength.

When connecting to a public Wi-Fi network, network speed might be slow for there are too many users. Try to connect to other Wi-Fi networks and see if you fixed the problem.

Try other Wi-Fi networks on your phone to exclude phone problems.

Clean up the caches and junk files on your phone, and do security scanning.

If you are a Wi-Fi network administrator, restart the router.

Check with your operator if there are network failures and limits in your area.

How to do if the handset Cannot connect to WIFI

Make sure that your router is on and you are within the range, and the password you entered is correct.

Check your router or cables, if your router has serious abrasion, aging, corrosion or mechanical damage, and make sure it is connected to the modem, and try to connect to Wi-Fi network again ten minutes later; Check and make sure that each cable is connected firmly and not damaged. try reconnecting again.

Restart the handset and router, and then try connecting the handset to WIFI, if it doesn’t connect, try connecting the handset to other WIFI network to determine the problem with router or handset

If the handset success to connect to other WIFI that means the problem with router.

First check your handset if connect to the correct frequency band WIFI(as some routers with 2 kind of frequency band 2.4 GHz and 5GHZ);If the handset can support WIFI 5 GHz (you can get this information from product Spec) that means it able to connect 2.4GHz WIFI and 5GHz WIFI; If the handset only support WIFI 2.4 G (you can get this information from product Spec) that means it only able to connect 2.4GHz WIFI
Second login the router Management interface to re-setting or call router’s manufacture to get the help, if the router with fault cannot be used, just change new one

If the handset fails to connect to other WIFI that means the problem with handset, please do factory data reset ,if still cannot visit the nearest service center

How to transfer the files, picture or video between handset and computer.

Connect your handset and computer with USB cable

:]Slide down the menu from the top you will see “USB charging this handset “click it you can see the option “Tap for more options”, click it and according your needs to make choose.
What should I do if my handset cannot connect to a computer?

The handset is forbidden on the computer, please allow handset to connect to your computer.

The USB data cable is broken, please check using other USB ports or try on a new cable.

The software problem may cause disconnection, please bring the phone to nearest service center to fix the software problem, or download the corresponding software from our official website to update your phone

Your phone might restart or turn off by itself when being used in a very cold or hot environment.

Check SIM and SD cards

Take out the SIM and SD cards, check if they are damaged or degaussing, then put them back in and see if the issue fixed
Take out the SD card to exclude SD card virus issue.

Check and charge the battery

Plug in your phone and let it charge for 30 minutes, then force restart your phone and see if you fixed the issue.
The battery will lose its capacity over time, thus cause the phone to turn itself off.
If your phone has a removable battery, remove and reinstall it. Make sure the battery contact is good.
If your phone’s battery is worn out or aging, visit the nearest service center to replace the battery

Update the handset to latest software by path Settings > System> System updates

Close unused background applications and Clean up the caches and junk files on your phone, and do security scanning.

If problems occur when an application is in use, uninstall the application to see if you fixed the issue.

Make sure that the problem is not caused by incorrect operations such as mistakenly touch and press the Power Button.